MIA88LA121

NTSB accident investigation · Schleicher K-8B · Miami, FL · March 7, 1988

Accident · No injuriesLimited investigationFinal report
Date
March 7, 1988, 16:30 local (21:30 UTC)
Place
Miami, FL
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Maneuvering
Aircraft
N4663SSchleicher K-8B
Weather
Visual (VMC) · Day
Status
Completed · report February 28, 1989
Report
Approved by Office Director
FAA report
19880307004869A
Case key
32146

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

On this page

Sequence of events

NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.

Airframe/component/system failure/malfunctionManeuvering
Wing,wing rib - failure,totalCause

Analysis

The plt stated that he had placed the glider into a mild dive & was indicating 90 to 95 mph, well below redline speed when the whole section of the trailing edge of the wing from the aft spar & wing root out to a dist of about 6 ft, separated from the acft. The plt was able to land without further incident. Although most of the failed pieces fell from the acft & were not recovered, an exam of the wing root rib revealed that it had failed. The wing spoiler attach bracket for the spoiler bellcrank is attached to the failed rib. The plt stated that the spoilers flew open inadvertently during or immediately after the failure occurred. The reason for the failure could not be determined. The acft is constructed entirely of wood.

Aircraft

Registration
N4663S
Reported as
Schleicher K-8B
Category
Glider
Serial number
8213
Airframe hours
2,957
Engine
unknown
Damage
Substantial damage
Flight
Personal · Part 91
Operator
Sunspot Soaring, Inc.
Registered owner
Steve Yoham
Airworthiness certificate
Standard, Normal; Standard, Utility; Standard, Aerobatic
Last inspection
Annual · December 4, 1987 · 45 hours before
Departed
6X5

Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
31
Certificates
Flight instructor, Commercial
Airplane ratings
Single-engine land, Multi-engine land
Medical
Class 2, Valid Medical--w/ waivers/lim
Seat
Center
Flight hours
3,518 total · 2 in this make and model · 100 in the last 90 days · 2 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
80° at 14 knots
Visibility
10 statute miles
Lowest ceiling
5,000 ft broken
Temperature
75 °F, dew point 63 °F
Altimeter
30.00 inHg
Observed at
TMB, 10 nm away

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.